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Fracture and debonding in lithium-ion batteries with electrodes of hollow core-shell nanostructures

Submitted by Kejie Zhao on

In a novel design of lithium-ion batteries, hollow electrode particles coated with stiff shells are used to mitigate mechanical and chemical degradation.  In particular, silicon anodes of such core-shell nanostructures have been cycled thousands of times with little capacity fading.  To reduce weight and to facilitate lithium diffusion, the shell should be thin.  However, to avert fracture and debonding from the core, the shell must be sufficiently thick.

How to implement a kind of nonlinear interaction relevant to relative velocity in ABAQUS?

Submitted by Quanzhao Sun on

Dear all,

Could anyone help to give me some advice on how to implement a kind of nonlinear interaction relevant to relative velocity in ABAQUS? The interaction force has a quadratic function with the relative velocity between two nodes. Thanks.